Toronto-York Spadina Subway Extension

The first subway extension in Toronto in over 15 years, the Toronto-York Spadina Subway Extension (TYSSE) was a decade long project. The $3.2 billion Toronto-York Spadina Subway Extension (TYSSE) is expected to carry some 24 million passengers a year by 2020.

Toronto is one of the fastest growing metropolitan areas in Canada, outpacing the country over the last five years. With that, the need for affordable mass transportation will be addressed in part by projects like the Toronto-York Spadina Subway Extension (TYSSE). Opened to the public in December 2017, the $3.2 billion project encompasses 8.6 km of track and 6 stations. By 2020, the extension is expected to carry about 24 million passengers a year and is the first addition to the subway network since Line 4 (Sheppard) entered service in 2002 *

 img-Toronto-York Spadina Subway Extension-Steel Station


WSP's role

WSP was part of the joint venture consortium awarded the program management services contract by the Toronto Transit Commission (TTC). WSP provided our expertise in assisting the TTC to navigate the building of the extension. From the planning stages, through design, construction and commissioning and finally on Opening Day, WSP was there. Over the course of 10 years, our teams provided an array of services, including project management, planning and approvals coordination, all disciplines of engineering expertise such as mechanical, electrical, structural, civil, transportation, construction management, environmental coordination, including surveying, mapping, and 3D laser scanning.

Some unique skillsets were showcased at the Pioneer Village (Steeles West) Subway Station, Downsview Station and Highway 407 Station, where WSP provided structural design and engineering services for the sub-surface two-level structure in addition to sustainability consulting services for Toronto Green Standard and City of Toronto Green Roof By-law compliance support. As well, for the Twin Tunnels Downsview Stations to Vaughan Corporate Centre, WSP provided structural engineering services for this project to provide impact analyses on existing structures and recommend risk mitigation, due to the tunnelling activities. The potential impacts on buildings vary by soil type through which the tunnels are constructed, as well as the building type, framing and proximity to the right of way.


Multi-sector collaboration

This project illustrates the successful result of an ambitious undertaking and will now serve as a working example of what is possible when we combine our collective expertise in the Transportation business line with that of the Buildings, Environment, Infrastructure and Geomatics groups.

img-Toronto-York Spadina Subway Extension-Steel Station

Your project in numbers

New subway stations
6 6
Kilometres of new track
8.6 KM 8.6 KM
Project Cost
$3.2B $3.2B